It's me again.
I did the following now:
I installed Titanium Backup on my 8160 and copied a backup of Locus Free 1.16 from my other device to the 8160, deinstalled all locus versions, did a reboot and restored the 1.16 on it. The strange thing is: The problem remains!!! Now even with the former working 1.16 version it is not working any longer!
Did you change / influence other components or did you changes to the map itself?
Thanks in advance,